Open Access. Powered by Scholars. Published by Universities.®
- Publication Type
Articles 1 - 3 of 3
Full-Text Articles in Entire DC Network
Effect Of Heat-Treatment Time On Bending Properties Of Cobolt-Chromium Orthodontic Wires, Melanie Hammerbeck
Effect Of Heat-Treatment Time On Bending Properties Of Cobolt-Chromium Orthodontic Wires, Melanie Hammerbeck
Master's Theses (2009 -)
Different protocols appear in the literature with respect to heat-treating cobalt-chromium orthodontic wires. The objective was to determine the effect of variable heat-treatment time and method on the bending properties of CoCr wires. Two tempers of CoCr ‘Elgiloy’ wires (Rocky Mountain Orthodontics), blue (B) and yellow (Y), were heat-treated for different durations. The groups (n=20/group/temper) included: 1) as-received (control); 2) brush-flame; 3) 480oC for 5sec; 4) 480oC for 10min; 5) 480oC for 2hr; and 6) 480oC for 5hr. Wire segments were tested by a three-point bend test. Stiffness/flexural modulus, percent recovery, and force values at select deflections were statistically compared …
Efficacy Of Invisalign Attachments: A Retrospective Study, Theresa Karras
Efficacy Of Invisalign Attachments: A Retrospective Study, Theresa Karras
Master's Theses (2009 -)
Objective: To compare the efficacy of Invisalign’s (Align Technology, Inc., Santa Clara, CA) optimized and conventional attachments on rotational and extrusive tooth movements.Materials and Methods: Initial, predicted, and achieved digital dental models from 100 orthodontic patients were exported from Invisalign’s ClinCheck software as stereolithography (STL) files and subsequently imported into the Slicer CMF program (open source, version 4.7.0) for superimpositions on posterior teeth with no planned movement. Rotational and extrusive measurements for both optimized and conventional attachment types were made on 382 teeth from the superimposition of the initial and predicted models (“predicted movement”) and from the superimposed initial and …
Early Condylectomy: Biological Considerations, Diego Fernando López, Juliana Ruiz Botero, Luis Eduardo Almeida
Early Condylectomy: Biological Considerations, Diego Fernando López, Juliana Ruiz Botero, Luis Eduardo Almeida
School of Dentistry Faculty Research and Publications
Objective: To describe the early treatment of two patients with unilateral condylar hyperplasia (UCH) diagnosis and therapeutic surgical protocol (early condylectomy) supported by the current biological knowledge about the development and repair of mandibular condyle cartilage (MCC). Methods: Review of the literature and two case description of the treatment. The two patients were girls, 12 and 13 year old. The follow up period was of 3 years. SPECT diagnostic, radiographic, photographic and tomographic images are presented. Results: The literature summarized provides biological basis favoring the early treatment of UCH. The two cases were treated with the same surgical protocol obtaining …